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Memory backend design and retrieval improvements

NousResearch/hermes-agent · cluster 2184 · agent

Data as of

Nothing open on GitHub. Fix merged in #22781. Check it covers your case.

The short answer

0open issues
0open PRs
4items grouped
Known?
Yes. 4 related items grouped here, 2 issues already closed.
Fix event
A fix was merged to main in PR #22781. Check it covers your case. No release data is tracked.
Tracker
The maintainers' tracker marks this unresolved. That is separate from the fix event.
Still open
Nothing open on GitHub.

These items explore different approaches to memory storage and retrieval for Hermes, including a holographic store, a video-based single-file backend (Memvid), structured fact extraction, and guidance constraints on what gets persisted.

Open issues0

No open issues.

Open PRs0

No open pull requests.

Fixes on record

Merged to main. A stamp counts the issues a fix is linked to.

  • #22781 fix(memory): tighten MEMORY_GUIDANCE against ephemeral PR/issue/SHA notes

    merged to main

    files: agent/prompt_builder.py

    Show the diff
    • agent/prompt_builder.py
      @@ -157,6 +157,9 @@ def _strip_yaml_frontmatter(content: str) -> str:
     "User preferences and recurring corrections matter more than procedural task details.\n"
     "Do NOT save task progress, session outcomes, completed-work logs, or temporary TODO "
     "state to memory; use session_search to recall those from past transcripts. "
+    "Specifically: do not record PR numbers, issue numbers, commit SHAs, 'fixed bug X', "
+    "'submitted PR Y', 'Phase N done', file counts, or any artifact that will be stale "
+    "in 7 days. If a fact will be stale in a week, it does not belong in memory. "
     "If you've discovered a new way to do something, solved a problem that could be "
     "necessary later, save it as a skill with the skill tool.\n"
     "Write memories as declarative facts, not instructions to yourself. "

1 PR closed without merging

From the close comments: closed without comment 1

  • #2351 feat(plugin): hermes-memory-store with holographic retrieval · closed without comment
Closed issues · 2
  • Closed#2184Feature: Richer local memory — structured retrieval and fact extraction beyond flat files
  • Closed#23874RFC: Evaluate Memvid as a Pluggable Single-File Memory Backend for Hermes
How this cluster was grouped
  • Link evidence (partly structural links): some members are connected by structural evidence (shared changed files, or a closing/superseded reference); the rest are joined by an automated relevance judgement over their text.
  • Members outside that structural core may belong to a different underlying problem.
  • Pairwise link density 0.39: the share of item pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. 1.00 means every pair is linked.

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At a glance

Subsystem
agent
Merged PRs
#22781
Closed issues
2
Attempts
1 PR closed without merging
Fix link checked
9 May 2026

For your agent

The same facts, typed.

cluster/2184.json
cluster/2184.md